[Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84786

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Matthias Kretz from comment #8)
> There seems to be a similar bug for vpsrlw and vpsllw. Do you need a
> testcase? (It's hard to hit the bug... just had one occur on a Travis CI
> build)

I don't see how that is possible.

Do you have at least objdump with the instructions (e.g. which exact operand it
is), and what gcc options were used?